name: Cloud Hypervisor's Docker image update
on:
  push:
    branches: main
    paths: resources/Dockerfile
  pull_request:
    paths: resources/Dockerfile
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - name: Code checkout
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Login to ghcr
        uses: docker/login-action@v2
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}


      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=raw,value={{date 'YYYYMMDD'}}-0
            type=sha

      - name: Build and push
        if: ${{ github.event_name == 'push' }}
        uses: docker/build-push-action@v2
        with:
          file: ./resources/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}

      - name: Build only
        if: ${{ github.event_name == 'pull_request' }}
        uses: docker/build-push-action@v2
        with:
          file: ./resources/Dockerfile
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}